Steam-trap.



PATENTBD MAY 1, 1906.

E. V. ANDERSON.

STEAM TRAP APPLIIOATION rum) JUNE 8. 1905. .7 v

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PATENTED MAY-1, 1906.

B. V. ANDERSON.

STEAM TRAP.

APPLICATION FILED JUN8.1905.

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E. V. ANDERSON.

STEAM TRAP. APPLIGATION FILED JUNE 8. 1905.

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PATENTED MAY 1, 1906.

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B. V. ANDERSON STEAM TRAP v APPLICATION FILED JUNB8.1905.H

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UNITED STATES PATENT orrion EDWARD V. ANDERSON, OF PITTSBURG.PENNSYLVANIA, ASSIGNOROF TVVO-THIRDSTO CHARLES E. GOLDEN, OF GRAFTON,PENNSYLVANIA;

STEAM-TRAP.

Specification of Letters Patent.

Patented May 1, 1906.

Application filed June 8, 1905- Serial No. 264,315.

new and improved steam-trap; and to thi end the present inventionconsists of a new and improved steam-trap, in new constructive features,and in the combination and ar rangement of parts, all as fullyhereinafter described and claimed.

In the accompanying drawings, which illustrate an application of myinvention, Figure 1 is a part side elevational view and a part sectionalview of a trap embodying my invention; Fig. 2, a part end view and apart sectional view; Fig. 3, a detailed vertical sectional View,particularly showing the valve mechanism; Fig. 4, a horizontal sectionalview on line a a of Fig. 3; Fig. 5, a detail view of a portion ofcounterbalancing-lever and its fulcrum, and Fig. 6 a detail sectionalview taken on line b b of Fig. 5.

Referring to the drawings, 1 designates a movable or tilting receiverarranged to collect the water of condensation and to dis charge the sametherefrom, and 2 a suitable bed-plate having attached thereto at one enda yoke 4 and at or near its other end an annular .plate or ring 5. Yoke4 is .provided with bearings for trunnions 6 and 7 j 6 represents thesupply trunnion, and 7 the waste.

The valve mechanism is contained within a single casing 8, and thiscasing, as well as one end of the receiver 1,is supported by thetrunnions. This contruction forms a characteristic and important featureof my invention.

The valve mechanism as illustrated comprises main valve 9, auxiliaryvalve 10, and intermediate said valves is a piston 11. Both valves intheir normal positions are respectively seated on valve-seats 9 and 10and 10* represents a coiled spring located in a chambered plug 12 andexerting a downward pressure on the auxiliary valve. Chamber 13 is incommunication with trunnion 6 by means of passages 14 and 14?, thuspermitting high-pressure steam or water to pass into said chamber and topress upon the auxiliary valve. Auxiliary valve has a valvestem 15extending downwardly therefrom and is provided with a collar 16. Thisstem is arranged to make contact with an arm 17, having one end adaptedto come in contact with the yoke and the other end pivoted to a forkedhanger 18.

19 designates a relief-port in low-pressure side of valve-casing, and 20a relief-port for piston, also on the low-pressure side. The function ofrelief-port 19 is to take pressure off the under side of piston when thesame is closing, and the purpose of port 20 is to permit the fluid whichmay leak by the piston to escape to the waste-passage.

20 designates a passage. for, the highpressure fluid which passes theauxiliary This passage leads to the under side valve. of the piston.

The upper end of the casing, is provided with a screw-threaded cap.21,and attention is particularly called to this construction, as it enablesa ready access to the main valve and the interior of the casing.

The receiving-chamber is connected up I with the valve-casing by meansof a nozzle 22,- which nozzle in the form illustrated is made integralwith said casing. Attached to the casing and projecting through thenozzle 22 is a horizontally-disposed pipe 23, having a curveddownwardly-extending end portion 24. Pipe 23 extends nearly the lengthof the receiver and moves therewith as the receiver is tilted. Theoppositeend of the.

receiver is connected with and supported by a counterbalancing-lever 25.Link 26 connects the lever and receiver.; Lever 25 is fulcrumed on aroller 27, supported on rod 28,

having its bearings in the forked portion 2.9

of annular plate 5.

3O designates an adjustable counterweight mounted on lever 25. l Themanner of supporting lever 25 forms an important and characteristicfeature of my invention, and I have particularlyillustrated a preferredconstruction of this part of my invention by Figs. 5 and 6. As shown,the lever is provided with an enlarged portion 31, having an ellipticalopening 32 and a vertically-disposed slot 33. The wall of opening 32rests upon the roller 27, and 34 designates a pin passing through slot33 and having its bearings in the forked portion 29.

The purpose of the above-described construction is to vary the leverageon both sides of the fulcrum, so that when the receiver tilts, caused bythe weight of the water therein overcoming the counterweight and acertain quantity of water is displaced from the re-- ceiver, thereceiver will not be brought back to its normal position before furtherwater is displaced. In other words, when the tilting takes place thecounterweight is shifted onto a shorter lever-arm and the receiver ontoa Slightly longer one. The desired quantity of water in the receiver isthen displaced through pipe 23 by the pressure of the steam. The amountof water displaced is controlled by the position of counterweight on thelever and also by thedistance between the roller and pin 34. Theseshould be so placed as to always leave a sufficient quantity of water inthe receiver to form a seal to prevent the escape of steam from thereceiver.

In the drawings I have shown the receiver in a horizontal position withthe valves closed ready to receive steam and water through thefeed-trunnion 6. When sufiicient water has been collected in thereceiver to overcome the weight of the counterweight, the receiver andvalve-casing are tilted. This tilting movement of receiver andvalve-casing causes auxiliary valve-stem 15 to make contact with arm 17,thereby raising auxiliary valve 10 and ermitting high-pressure fluid topass throng passage 20 to the lower side of piston 11, thereby raisingthe piston and the main valve. While the receiver is discharging throughpipe 23 and waste-trunnion 7 to a connected pipe, (not shown,) collar 16covers port 14 and prevents the escape of high-pressure fluid. Whensufiicient Water has been displaced from the receiver, it is caused toassume its normal or horizontal position by the counterweight, andduring this movement both valves are seated.

While I have shown and described my invention in the form of asteam-trap, my trap may be employed in connection with other fluids.

What I claim is- 1. In a trap of the character described, thecombination with a fluid-receiver, of a valvecasing, valve mechanism insaid casing, a supply-trunnion, a waste-trunnion, said receiverconnected with the valve-casing, and said casing supported on thetrunnions.

2. In a trap of the character described, the combination, with a tiltingreceiver, of a valve mechanism, a counterbalancing-lever having anelliptically-formed fulcrum-bearing and a vertically-disposed slot, afulcrum-roller, having fixed bearings, said lever-b earing mounted onthe roller-fulcrum, and a pin located in the said slot.

3. In a trap of the character described the combination with a receiver,of a valve-casing, a valve mechanism in the casing, trunnions on Whichthe valve-casing is mounted and arranged to turn, one end of thereceiver a va ve to admit fluid to one side of the piston for thepurpose of moving the piston to open the main valve as the receivertilts.

5. In a trap of the character described, the combination Withsupporting-trunnions, a valve mechanism having its casing mounted on thetrunnions, a tilting receiver attached to the valve-casing and arrangedto move therewith, a main valve controlling the fluid-discharge from thereceiver, a piston, and an auxiliary valve actuated by tilting thereceiver whereby fluid is admitted to one side of the piston for thepurpose of moving the main valve. v

6. In a trap of the character described the combination withsupporting-trunnions, a valve mechanism having its casing mounted on thetrunnions, a tilting receiver attached at one end to the casin acounterbalancinglever connected with t e opposite end of the receiver,said lever having an ellipticallyformed fulcrum-bearing and avertically-disposed slot, a fulcrum-roller having fixed bearings, saidlever-bearing mounted on the rollerfulcrum, and a pin located in thesaid slot.

7. In a trap of the character described, the combination with afluid-receiver of a valve mechanism comprising a main valve and anauxiliary valve, a counterbalancing lever having an elliptically-formedbearing, a rollerfulcrum, said lever-bearing mounted on the roller andarranged to be shifted thereon.

In testimony whereof I affix my signature in presence of two subscribingwitnesses.

EDWARD V. ANDERSON.

Witnesses:

W. G. DOOLITTLE, MARGARET HUGHES.

piston, means for moving the auxiliary

